#include <iostream>
#include <stdlib.h>
using namespace std;
struct student
{
   virtual void Print()
   {

   }
  private:
   int _a;
   char _ch;
   double _d;
};
struct teacher
{
};
int main()
{
  cout<<sizeof(student)<<endl;
  cout<<sizeof(teacher)<<endl;
  return 0;
}
